You are replacing electricity with inefficient food energy conversion. So someone please fire these researchers. The last thing we need is "energy" food that we have to eat just to keep our heart beating or smart-phone working. I mean, I can't be the only one who has seen enough sci-fi to know why this is a bad bad bad extremely bad super mega bad idea.. right?

Exactly. And what about dead people or more specifically, zombies.. The phones won't work for them??